C0022:12

PINPOINT TEST 11: DTCs C0022:11, 12, 13, 14, 1D AND 49

Normal Operation

The brake booster solenoid is internal to the brake booster. During normal braking, the ABS module will apply a pulse-width modulation (PWM) voltage to the brake booster solenoid along circuit (GY/YE). The ABS module will provide ground to the solenoid along circuit (GN/BN). The ABS module constantly checks the integrity of the booster solenoid and circuits. If circuit (GY/YE), circuit (GN/BN) or the booster solenoid is open, shorted to ground or has high resistance, a DTC will set. If a booster solenoid fault is detected the brake system will transition from brake-by-wire mode to conventional friction braking. Other DTCs for brake booster performance may set as a result of a brake booster solenoid circuit fault. The brake booster solenoid cannot be serviced separately from the brake booster. If a new brake booster solenoid is needed, a new brake booster must be installed.

C0022:1D-C0022:49:

Possible Causes
- Wiring, terminals or connectors
- Brake booster
- ABS module

Diagnostic Procedure

CAUTION:Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

Step 1-Step 4:

Step 5-Step 6: